Narrow Water Castle sits on a small spit of land at the point where Carlingford Lough pinches in toward Newry, about two miles up the A2 from Warrenpoint. The slim three-storey tower house is a classic Plantation-era fortified residence, built in the 1560s on the foundations of a much older Anglo-Norman castle. Its position controlled the only practical sea route into Newry and it changed hands several times during the wars of the 17th century.
The castle is open seasonally and can be visited as part of a short walk along the shore. The setting — castle, narrow water, and the green ridges of the Cooley peninsula opposite — is one of the most photogenic spots on this stretch of coast. The surrounding Narrow Water Forest has a network of trails that climb up toward Burren and offer expanding views back over the lough.